code: def test_reload_with_dynamic_batching(tmpdir):
      from tests.integration.hot_reload.exec1.my_executor1 import (
          MyExecutorToReload1,
      )
  
      f = Flow().add(
          uses=MyExecutorToReload1,
          reload=True,
          uses_dynamic_batching={
              "/bar": {"preferred_batch_size": 1, "timeout": 1000}
          },
      )
      with f:
          res = f.post(on="/bar", inputs=DocumentArray.empty(10))
          assert len(res) == 10
          for doc in res:
              assert doc.text == "MyExecutorBeforeReloadBar"
          with _update_file(
              os.path.join(cur_dir, "my_executor_1_new.py"),
              os.path.join(cur_dir, "exec1/my_executor1.py"),
              str(tmpdir),
          ):
              res = f.post(on="/bar", inputs=DocumentArray.empty(10))
              assert len(res) == 10
              for doc in res:
                  assert doc.text == "MyExecutorAfterReloadBar"
          res = f.post(on="/bar", inputs=DocumentArray.empty(10))
          assert len(res) == 10
          for doc in res:
              assert doc.text == "MyExecutorBeforeReloadBar"
  
file_path: jina/tests/integration/hot_reload/test_hot_reload.py
imports: import contextlib
  import os
  import shutil
  import time
  from jina import DocumentArray, Flow
label_desc: Use image node_id 3 for calling a global function with example usage: test_reload_with_dynamic_batching(tmpdir) without return types